diff --git a/yesod-core.cabal b/yesod-core.cabal
--- a/yesod-core.cabal
+++ b/yesod-core.cabal
@@ -1,5 +1,5 @@
 name:            yesod-core
-version:         1.1.8.2
+version:         1.1.8.3
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -63,7 +63,7 @@
                    , shakespeare-i18n      >= 1.0      && < 1.1
                    , blaze-builder         >= 0.2.1.4  && < 0.4
                    , transformers          >= 0.2.2    && < 0.4
-                   , clientsession         >= 0.8      && < 0.9
+                   , clientsession         >= 0.8
                    , random                >= 1.0.0.2  && < 1.1
                    , cereal                >= 0.3      && < 0.4
                    , old-locale            >= 1.0.0.2  && < 1.1